The trailer begins by summarizing the events of the first and second film before leading into footage from the new movie, which starts with Zach Galifianakis saying he must resign from the wolf pack. It then shows some highlights from 'Part III,' which include the return of "Black Doug" (Mike Epps) and Leslie Chow (Jeong) acting like a reprehensible jerk. It's Chow who gets the wolf pack in trouble -- this time with John Goodman. Also, there's lots of swearing.

Though 'The Hangover Part III' promises that it's the end of the franchise, Hollywood has proved reticent about retiring films that make piles and piles of money, and -- though most people didn't like the second film as much as the first -- the third film looks like another big hit. With many movie franchises wearing out their welcomes, we're happy that they say this is the end... but we'll believe it in ten years. 'The Hangover Part III' opens in theaters May 23. Here's that trailer: